Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Of inorganic materials
Patent
1973-09-17
1976-07-13
Morris, Theodore
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Of inorganic materials
106 15FP, 106 87, 106122, 252 81, B29H 720
Patent
active
039694534
ABSTRACT:
A method of making a foamed fireproof product of magnesium oxychloride cement and the resulting product. A porous substrate is impregnated with a foaming mixture of magnesium chloride, magnesium oxide, and frothing agent in water. The mixture hardens with small voids throughout the porous substrate, thus providing a fireproof product of low density. The foamed product may be formed in a mold with fibrous elements introduced into the foaming mixture. The fireproof products of relatively low density are particularly valuable for building and construction purposes. Magnesium powder is the preferred frothing agent which, in combination with a surfactant, induces a large volume of small bubbles that remain in the composition as it is set.
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Morris Theodore
Thompson Chemicals, Inc.
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